Active braking speed limiter

Abstract

The utility model discloses an active braking speed limiter, and relates to the technical field of elevator braking speed limiters. A central shaft is arranged on a supporting frame, and a rope wheel is rotatably connected to the central shaft; the ratchet wheel is fixedly connected to the center shaft and is parallel to the rope wheel. The braking pawl is arranged on the outer side of the ratchet wheel on the rope wheel and rotationally connected with the surface of the side, close to the rope wheel, of the rope wheel. The brake plate is rotatably connected with the support frame; the electromagnet is fixedly connected with the supporting frame and is in transmission connection with the brake plate, and the electromagnet pushes the brake plate to swing. The ratchet wheel and the brake pawl are arranged, the brake plate is driven by the brake electromagnet to push the brake pawl to swing, the brake pawl can be driven by the electromagnet to be matched with the ratchet wheel, and due to the fact that the ratchet wheel is fixedly connected to the shaft and the brake pawl is arranged on the rope wheel, rapid braking and emergency braking of the rope wheel can be achieved. The rope wheel can be directly braked, and active braking of the elevator can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator brake limiter technical field more specifically relates to a kind of initiative brake limiter. BACKGROUND

[0002] Elevator limiter is one of safety control components in elevator safety protection system.Elevator limiter in prior art is all passive braking to elevator after the overspeed of elevator and reaches certain speed, cannot brake to elevator when elevator accelerates, often needs larger braking force to brake to elevator, cannot active braking.

[0003] Therefore, how to provide a kind of active braking limiter that can be actively controlled by hand to actively brake to elevator in acceleration process is the problem that the person skilled in the art needs to solve urgently. CONTENT OF UTILITY MODEL

[0004] Therefore, the utility model provides a kind of initiative brake limiter, to solve the problems in the background art above, realize through hand active control to actively brake to elevator in acceleration process.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of initiative brake limiter, comprising:

[0007] Support frame, the center shaft is provided on the support frame, the rope wheel is rotatably connected on the center shaft;

[0008] Ratchet, the ratchet is fixedly connected on the center shaft, the ratchet and the rope wheel are parallel to each other;

[0009] Brake pawl, the brake pawl is arranged on the outer side of the rope wheel ratchet, the pawl is rotatably connected with the surface of the side of the rope wheel close to the rope wheel, the brake pawl cooperates with the ratchet;

[0010] Brake plate, the brake plate is rotatably connected with the support frame, the rotation plane of the brake plate is same with the rotation plane of the brake pawl, when the brake plate pushes the brake pawl, the brake pawl cooperates with the ratchet;

[0011] Electromagnet, the electromagnet is fixedly connected with the support frame, the electromagnet is drivingly connected with the brake plate, the electromagnet pushes the brake plate swing.

[0012] Further, the middle part of the brake pawl is rotatably connected with the rope wheel, one end of the brake pawl is provided with wedge, the other end of the brake pawl is provided with swing block, the wedge cooperates with the ratchet.

[0013] Further, the wedge is provided with a clamping shaft, the brake plate is used to push the clamping shaft, and the wedge is clamped with the groove on the ratchet wheel in use.

[0014] Further, the swing block is connected with a spring, and the other end of the spring is fixedly connected with the side surface of the rope wheel.

[0015] Further, the brake plate is provided with a trigger rod, the trigger rod is perpendicular to the brake plate, one end of the trigger rod penetrating through the support frame is in abutment with the driving rod of the electromagnet, and the electromagnet is arranged on the side, away from the rope wheel, of the support frame.

[0016] Further, the support frame has a U-shaped cross section, the top of the support frame is fixedly connected with the central shaft, and the two ends of the central shaft penetrate through the two side walls of the support frame respectively.

[0017] Further, the ratchet wheel is provided with an arc-shaped hole, an adjusting bolt is transversely arranged in the arc-shaped hole, the adjusting bolt is fixedly connected with the support frame, two fastening nuts are arranged on the adjusting bolt, and the two fastening nuts are arranged on the two sides of the ratchet wheel respectively.

[0018] Further, the support frame is fixedly connected with the cushion box through bolts.

[0019] Compared with the prior art, the active brake speed limiter provided by the utility model has the advantages that the ratchet wheel and the brake pawl are arranged, the brake plate is driven by the brake electromagnet to push the brake pawl to swing, the brake pawl is driven by the electromagnet to cooperate with the ratchet wheel, the ratchet wheel is fixedly connected with the shaft, the brake pawl is arranged on the rope wheel, and therefore the active brake speed limiter can realize the quick brake and the emergency brake of the rope wheel, can directly stop the rope wheel, and can realize the active brake of the elevator. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to the provided drawings without paying the creative labor.

[0021] Fig. 1 It is an external structure schematic view of the active brake speed limiter provided by the utility model.

[0022] Fig. 2The utility model provides a kind of brake plate structure schematic diagram of initiative brake speed limiter for the utility model provides.

[0023] Fig. 3 The utility model provides a kind of brake pawl schematic diagram of ratchet of initiative brake speed limiter for the utility model provides.

[0024] Wherein:1 is support frame;2 is center shaft;3 is rope wheel;4 is ratchet;5 is brake pawl;6 is brake plate;7 is electromagnet;8 is wedge;9 is swing block;10 is clamping shaft;11 is spring;12 is trigger lever;13 is arc hole;14 is pad box. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0026] Referring to Figs. 1-3 The utility model discloses a kind of initiative brake speed limiter, comprising:

[0027] Support frame 1, support frame 1 is provided with center shaft 2, center shaft 2 is rotatably connected with rope wheel 3;In the present embodiment, support frame 1 is mainly used to support and fix center shaft 2, the both ends of center shaft 2 are fixedly connected with support frame 1, center shaft 2 is arranged in the middle of support frame 1 top, the axis of center shaft 2 is horizontally arranged, the both ends of center shaft 2 are connected with support frame 1 by bolt.

[0028] Ratchet, ratchet is fixedly connected on center shaft 2, ratchet and rope wheel 3 are parallel to each other;In the present embodiment, ratchet is fixedly connected with center shaft 2, ratchet is sleeved on center shaft 2, the direction of tooth on ratchet is opposite to the turning direction of rope wheel 3, the setting direction of ratchet can be changed according to the situation when using.

[0029] The brake pawl 5 is arranged on the outer side of the ratchet wheel catch of the rope wheel 3, and is rotatably connected to the surface of the rope wheel 3 close to one side of the rope wheel 3. The brake pawl 5 is matched with the ratchet wheel. The brake plate 6 is rotatably connected to the support frame 1. The rotating plane of the brake plate 6 is the same as that of the brake pawl 5. When the brake plate 6 pushes the brake pawl 5, the brake pawl 5 is matched with the ratchet wheel. The electromagnet 7 is fixedly connected to the support frame 1. The electromagnet 7 is drivingly connected to the brake plate 6. The electromagnet 7 pushes the brake plate 6 to swing. In the embodiment, the driving rod of the electromagnet 7 can perform linear reciprocating motion. When the driving rod extends outward from the electromagnet 7, the driving rod abuts against the brake plate 6. The rotating center of the brake plate 6 is above the position pushed by the driving rod. The brake plate 6 moves upward under the action of the driving rod. In the process, one side of the brake pawl 5 contacts the upper end of the brake plate 6 and rotates. The working part of the brake pawl 5 after rotation is clamped with the ratchet wheel, thereby completing the active braking of the rope wheel 3.

[0030] The middle part of the brake pawl 5 is rotatably connected to the rope wheel 3. One end of the brake pawl 5 is provided with a wedge block 8. The other end of the brake pawl 5 is provided with a swing block 9. The wedge block 8 is matched with the ratchet wheel. The wedge block 8 is provided with a clamping shaft 10. The brake plate 6 is used to push the clamping shaft 10. In use, the wedge block 8 is clamped with the groove on the ratchet wheel. The swing block 9 is connected with a spring 11. The other end of the spring 11 is fixedly connected to the side surface of the rope wheel 3. In the embodiment, the masses of the two ends of the brake pawl 5 are the same. When the brake pawl 5 swings toward the rotating direction of the rope wheel 3, the rope wheel 3 can be braked. When the brake pawl 5 rotates toward the opposite direction of the rotating direction of the rope wheel 3, the rotation of the rope wheel 3 is not limited. The swing block 9 is arranged on the side opposite to the rotating direction of the brake pawl 5 and the rope wheel 3. The wedge block 8 is arranged on the same side as the rotating direction of the brake pawl 5 and the rope wheel 3. By arranging the spring 11, the wedge block 8 can be pulled close to the edge close to the rope wheel 3 when braking is not needed. The brake pawl 5 can be effectively prevented from moving close to the ratchet wheel under the action of the centrifugal force. The rope wheel 3 can be prevented from being braked in the case of no control.

[0031] The brake plate 6 is provided with a trigger rod 12. The trigger rod 12 is perpendicular to the brake plate 6. The trigger rod 12 penetrates the support frame 1. One end of the trigger rod 12 penetrating the support frame 1 abuts against the driving rod of the electromagnet 7. The electromagnet 7 is arranged on the side of the support frame 1 away from the rope wheel 3. The cross section of the support frame 1 is U-shaped. The top of the support frame 1 is fixedly connected to the central shaft 2. The two ends of the central shaft 2 penetrate the two side walls of the support frame 1. The ratchet wheel is provided with an arc-shaped hole 13. An adjusting bolt is transversely arranged in the arc-shaped hole 13. The adjusting bolt is fixedly connected to the support frame 1. Two fastening nuts are arranged on the adjusting bolt. The fastening nuts are arranged on the two sides of the ratchet wheel, respectively. The support frame 1 is provided below with a cushion box 14. The cross section of the cushion box 14 is several Chinese characters. The support frame 1 is fixedly connected to the cushion box 14 through bolts.

[0032] The various embodiments described in this specification are presented by way of example, and each embodiment describes a specific feature of the application that is independently useful. Each embodiment can be used in conjunction with any other embodiment, and the various features of the application are not limited to any one embodiment. The various embodiments described in this specification can be implemented in hardware, software, or a combination thereof. The various embodiments described in this specification can be implemented in one or more computer programs that are executable on a programmable computer or computer system. The various embodiments described in this specification can be implemented in a computer program product that can be executed on a programmable computer or computer system.

[0033] The above description of disclosed embodiments is intended to be illustrative and not restrictive. Many modifications, additions and deletions can be made to the disclosed embodiments without departing from the spirit or scope of the application. Accordingly, it is intended that the scope of the application be limited only by the claims appended hereto.

Claims

1. An active brake limiter characterized by, Include: Support frame, the center shaft is arranged on the support frame, the rope wheel is rotatably connected on the center shaft; Ratchet, the ratchet is fixedly connected on the center shaft, the ratchet and the rope wheel are parallel to each other; Brake pawl, the brake pawl is arranged on the outer side of the rope wheel ratchet, the pawl is rotatably connected with the side surface of the rope wheel close to the rope wheel, the brake pawl cooperates with the ratchet; Brake plate, the brake plate is rotatably connected with the support frame, the rotation plane of the brake plate is the same as the rotation plane of the brake pawl, when the brake plate pushes the brake pawl, the brake pawl cooperates with the ratchet; Electromagnet, the electromagnet is fixedly connected with the support frame, the electromagnet is drivingly connected with the brake plate, the electromagnet pushes the brake plate to swing.

2. A positive brake limiter according to claim 1, wherein The middle part of the brake pawl is rotatably connected with the rope wheel, one end of the brake pawl is provided with a wedge, the other end of the brake pawl is provided with a swing block, the wedge cooperates with the ratchet.

3. A positive brake limiter according to claim 2, wherein The wedge is provided with a clamping shaft, the brake plate is used for pushing the clamping shaft, and the wedge is clamped with the groove on the ratchet in use.

4. A positive brake speed limiter according to claim 2, wherein The swing block is connected with a spring, and the other end of the spring is fixedly connected with the side surface of the rope wheel.

5. A positive brake speed limiter according to claim 1 wherein, The trigger lever is provided on the brake plate, the trigger lever is perpendicular to the brake plate, the trigger lever penetrates the support frame, one end of the trigger lever penetrating the support frame abuts against the driving rod of the electromagnet, and the electromagnet is arranged on the side of the support frame away from the rope wheel.

6. A positive brake speed limiter according to claim 1 wherein, The cross section of the support frame is U-shaped, the top of the support frame is fixedly connected with the center shaft, and the two ends of the center shaft penetrate the two side walls of the support frame respectively.

7. A positive brake speed limiter according to claim 1 wherein, The ratchet is provided with an arc-shaped hole, an adjusting bolt is transversely arranged in the arc-shaped hole, the adjusting bolt is fixedly connected with the support frame, two fastening nuts are arranged on the adjusting bolt, and the two fastening nuts are arranged on the two sides of the ratchet respectively.

8. A positive brake speed limiter according to claim 1 wherein, The support frame is provided below the cushion box, the cross section of the cushion box is a few characters, and the support frame is fixedly connected with the cushion box through bolts.

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